diff --git a/app/controllers/api/v1/webhooks_controller.rb b/app/controllers/api/v1/webhooks_controller.rb
index 20cc0ddc..0ecca9d7 100644
--- a/app/controllers/api/v1/webhooks_controller.rb
+++ b/app/controllers/api/v1/webhooks_controller.rb
@@ -9,6 +9,8 @@ module Api
 
       # Trae los cambios a partir de un post de Webhooks:
       # (Gitlab, Github, Gitea, etc)
+      #
+      # @return [nil]
       def pull 
         message = I18n.with_locale(site.default_locale) do
           I18n.t('webhooks.pull.message')
@@ -36,22 +38,27 @@ module Api
               request.headers['X-Gitlab-Token']
             # Github
             elsif request.headers['X-HUB-SIGNATURE-256']
-              request.env['HTTP_X_HUB_SIGNATURE_256']
+              token_from_signature(request.env['HTTP_X_HUB_SIGNATURE_256'])
             # Gitea
             else
-              request.env['HTTP_X_GITEA_SIGNATURE']
+              token_from_signatureq(request.env['HTTP_X_GITEA_SIGNATURE'])
             end
           end 
       end
 
       # valida token a partir de firma de webhook
       #
-      # @return [String]
+      # @return [String, Boolean]
       def token_from_signature(signature)
         payload = request.body.read  
         site.roles.where(temporal: false, rol: 'usuarie').pluck(:token).find do |token|
           new_signature = 'sha256=' + OpenSSL::HMAC.hexdigest(OpenSSL::Digest.new('sha256'), token, payload)
           ActiveSupport::SecurityUtils.secure_compare(new_signature, signature)
+        end.tap do |t|
+          raise ArgumentError, 'token no encontrado' if t.nil?
+        rescue ArgumentError => e
+          ExceptionNotifier.notify_exception(e, data: { params: params.to_h })
+          raise ActiveRecord::RecordNotFound
         end
       end